Post Rich Text Edior

I am thinking of modifying the Post Rich Text editor to allow html code for the Edit Profile editor, and also, increasing the size of the html insertion popup window. If anyone has tried anything with the rich text editor and has a suggestion let me know. Maybe just point me in the right direction, I looked through the UNA code for anything to pop out at me and so far, nothing. I noticed that the Classes page profile editor does allow html and I am thinking of using html to edit profiles. I do not think anyone is going to break their profile using html. java maybe would be bad but that is already not allowed.